Thorite CDV-700 Geiger Counter Test Source Uranium #44

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EBay accepted unrefined ore sample - details at bottom of listing USA ONLY ON THIS ONE - TOO ACTIVE FOR AIRMAIL Ships in a 14"x14"x14" box due to activity limits - shipping is actual Lowest prices anywhere on the planet SUPERIOR Thorite ore !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! TEST YOUR CDV-700 Don't buy a few grams, get a large amount of material here at a very fair price. Most of this stuff on line was mined by me anyway - buy from the source and save $$$. Available is a large 210 gram set of NEAR SOLID Thorite (Th) ore from the Trench #1 on Mount Rosa in Teller County , Colorado . This pieces are nearly solid Thorite and is unusually active. This is the best material I have found to date! This is excellent material for Geiger Test specimens and is also of collector and scientific research quality. Since Rad detector readings will differ depending upon the type and probe sensitivity, I include photos using three calibrated meters of different types (NeutronRae Pager, CDV-700 with beta shield CLOSED, and Eberline ASP-1 with a very sensitive, large scintallator probe). The specimens measure about 3.6 mR/hr on my NeutronRae and is about 10 mR/hr CDV-700 with the beta shield closed! Finally, they measure about 800,000 cpm with my ASP-1 at two inches from the specimen and 2,200,000 at the surface. Note: You may read more